XML 45 R18.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following (in thousands):
 
Estimated
Useful Life
(in years)
 
As of December 31,
 
 
2018
 
2017
Automobiles
5
 
$
23

 
$
23

Leasehold improvements
4
to
20
 
3,782

  
3,542

Computer software and equipment
2
to
7
 
23,776

  
17,024

Machinery and equipment
3
to
5
 
16,756

  
15,178

Furniture and fixtures
5
to
20
 
2,827

  
2,295

Work in progress (1)
N/A
 
1,590

  
1,052

Total cost
 
 
 
 
48,754

  
39,114

Accumulated depreciation
 
 
 
 
(26,538
)
  
(23,287
)
   Total property, plant and equipment, net
 
 
 
 
$
22,216

  
$
15,827

(1) Work in progress primarily includes information technology assets and production tooling.

Depreciation expense was as follows (in thousands):
 
Year Ended December 31,
 
2018
 
2017
 
2016
Depreciation expense
$
5,778

 
$
5,387

 
$
4,320